SENNHEISER Momentum 4 Wireless Headphones

- Discover best-in-class sound with our audiophile-inspired accoustic system. - Enjoy your favorite music like never before with our audiophile-inspired 42mm transducer system that delivers brilliant dynamics, clarity and musicality. - Make the sound perfect for you using the built-in EQ, presets, sound modes, and Sound Personalization feature - New Adaptive Noise Cancellation and Transparency Mode - Premium look amp; feel - The M4’s lightweight design features a padded headband and deep, yet soft, cushioned earpads - Up to 60-hour battery life - Smart Pause halts playback What #39;s in the box a carry case that lets you take your new headphones anywhere with full confidence, a USB-C charging cable and 1,2 m auxiliary cable and a quick guide Specifications Article number (SKU), 509266 (black), 509267 (white) Wearing style, Headband stereo headphones Ear Coupling, Around-the-ear, circum-aural Connectivity, Bluetooth 5.2 compliant, class 1, 10 mW (max) Transmission frequency, 2,402 MHz to 2,480 MHz; GFSK, π/4 DQPSK / 8 DPSK Supported Profiles, A2DP, AVRCP, HFP Codecs, SBC, AAC, aptX, aptX adaptive Speaker Type, Dynamic Transducer principle, 42mm diameter Speaker frequency range, 6 Hz to 22 kHz Speaker sensitivity, 106 dB SPL (1 kHz / 0 dB FS) Total harmonic distortion (THD), Speaker: lt;0,3% (1 kHz / 100 dBSPL) Impedance, Speaker: Active 470 ohms / Passive 60 ohms Active Noise Cancellation, Hybrid Adaptive ANC Microphone principle, MEMS Frequency response (microphone), 50 Hz to 10 kHz Microphone pick-up pattern, 2 mics per side, beamforming for noise reduction Battery time, Up to 60 hrs music playtime Charging time, Approx. 2 hrs for full charge Remark: Ambient temperatures gt;30°C may lead to extended charging times Battery type, Built-in Lithium-Ion recharge BTD 600 Dongle the easy way to get the best performance your headphones